EP2782431A2 - Procédé de fabrication de dispositif semi-conducteur et gabarit de montage - Google Patents

Procédé de fabrication de dispositif semi-conducteur et gabarit de montage Download PDF

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Publication number
EP2782431A2
EP2782431A2 EP14159319.4A EP14159319A EP2782431A2 EP 2782431 A2 EP2782431 A2 EP 2782431A2 EP 14159319 A EP14159319 A EP 14159319A EP 2782431 A2 EP2782431 A2 EP 2782431A2
Authority
EP
European Patent Office
Prior art keywords
tubular contact
contact element
jig
circuit board
positioning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP14159319.4A
Other languages
German (de)
English (en)
Other versions
EP2782431A3 (fr
EP2782431B1 (fr
Inventor
Rikihiro Maruyama
Kenshi Kai
Nobuyuki Kanzawa
Mitsutoshi Sawano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Publication of EP2782431A2 publication Critical patent/EP2782431A2/fr
Publication of EP2782431A3 publication Critical patent/EP2782431A3/fr
Application granted granted Critical
Publication of EP2782431B1 publication Critical patent/EP2782431B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/301—Assembling printed circuits with electric components, e.g. with resistor by means of a mounting structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
    • H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
    • H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
    • H01L23/49811—Additional leads joined to the metallisation on the insulating substrate, e.g. pins, bumps, wires, flat leads
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
    • H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
    • H01L25/07—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L29/00
    • H01L25/072—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L29/00 the devices being arranged next to each other
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/303—Surface mounted components, e.g. affixing before soldering, aligning means, spacing means
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
    • H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
    • H05K3/341—Surface mounted components
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
    • H01L21/48—Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the subgroups H01L21/06 - H01L21/326
    • H01L21/4814—Conductive parts
    • H01L21/4846—Leads on or in insulating or insulated substrates, e.g. metallisation
    • H01L21/4853—Connection or disconnection of other leads to or from a metallisation, e.g. pins, wires, bumps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/4805—Shape
    • H01L2224/4809—Loop shape
    • H01L2224/48091—Arched
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/481—Disposition
    • H01L2224/48135—Connecting between different semiconductor or solid-state bodies, i.e. chip-to-chip
    • H01L2224/48137—Connecting between different semiconductor or solid-state bodies, i.e. chip-to-chip the bodies being arranged next to each other, e.g. on a common substrate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
    • H01L23/373—Cooling facilitated by selection of materials for the device or materials for thermal expansion adaptation, e.g. carbon
    • H01L23/3735—Laminates or multilayers, e.g. direct bond copper ceramic substrates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/10—Details of semiconductor or other solid state devices to be connected
    • H01L2924/11—Device type
    • H01L2924/13—Discrete devices, e.g. 3 terminal devices
    • H01L2924/1304—Transistor
    • H01L2924/1305—Bipolar Junction Transistor [BJT]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/10—Details of semiconductor or other solid state devices to be connected
    • H01L2924/11—Device type
    • H01L2924/13—Discrete devices, e.g. 3 terminal devices
    • H01L2924/1304—Transistor
    • H01L2924/1305—Bipolar Junction Transistor [BJT]
    • H01L2924/13055—Insulated gate bipolar transistor [IGBT]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10227—Other objects, e.g. metallic pieces
    • H05K2201/10257—Hollow pieces of metal, e.g. used in connection between component and PCB
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10227—Other objects, e.g. metallic pieces
    • H05K2201/1031—Surface mounted metallic connector elements
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/02—Details related to mechanical or acoustic processing, e.g. drilling, punching, cutting, using ultrasound
    • H05K2203/0278—Flat pressure, e.g. for connecting terminals with anisotropic conductive adhesive
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
    • H05K3/4007—Surface contacts, e.g. bumps
    • H05K3/4015—Surface contacts, e.g. bumps using auxiliary conductive elements, e.g. pieces of metal foil, metallic spheres
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5313—Means to assemble electrical device
    • Y10T29/532—Conductor

Definitions

  • the present invention relates to a manufacturing method of mounting tubular contact elements with high accuracy onto a semiconductor device provided with the tubular contact elements and a mounting jig for mounting the tubular contact elements.
  • a power semiconductor module is generally a device having a semiconductor chip such as an IGBT contained in a case is mounted on an insulated circuit board with external terminals provided for connecting the semiconductor chip and the exterior of the case.
  • a technology of connecting tubular contact elements to the circuit pattern of an insulated circuit board with solder has been proposed as the technology of easily and inexpensively connecting external terminals to the insulated circuit board with long term stability against mechanical stresses and vibrations ( US 2009/0194884 A1 ).
  • the tubular contact element is formed in a shape of a hollow cylindrical tube having a flange at each longitudinal end thereof and one longitudinal end of the tubular contact element is soldered to the circuit pattern of the insulated circuit board so that the tubular contact element extends from the surface of the circuit pattern of the insulated circuit board with the longitudinal direction thereof being oriented in the vertical direction.
  • an external terminal having a square cross section into the inner space of the tubular contact element to be press-fitted, it becomes possible to connect the external terminal to the tubular contact element with high reliability.
  • a semiconductor device is disclosed in which the thickness of one end of a tubular electrode is made to be thinner than the thickness of the other end ( JP-A-2011-138998 ).
  • the external terminal of the semiconductor device provided with the tubular contact element is provided at a predetermined position. Therefore, in manufacturing the semiconductor device, the tubular contact element must be mounted on the insulated circuit board with high positioning accuracy. Poor positioning accuracy sometimes causes the tubular contact element to be mounted on the insulated circuit board while being made inclined rather than vertical. The tubular contact element mounted while being made inclined will cause lack of solder inside the tube of the tubular contact element, which leads to possible reduction or instability in joining strength at the soldered joint.
  • the invention was made in view of such points with an object of providing a manufacturing method of a semiconductor device by which method tubular contact elements can be mounted on an insulated circuit board with high positioning accuracy and a mounting jig suited for being used for mounting the tubular contact elements on the insulated circuit board.
  • the method is a method of joining a plurality of tubular contact elements onto a circuit pattern on an insulated circuit board in manufacturing a semiconductor device including the insulated circuit board having the circuit pattern formed on at least one of the surfaces thereof, at least one semiconductor element mounted on the insulated circuit board, a plurality of the tubular contact elements joined to the circuit pattern on the insulated circuit board, a plurality of external terminals electrically connected to their respective tubular contact elements, and a case containing the insulated circuit board.
  • the method uses a mounting jig having an insulated circuit board positioning jig, a tubular contact element positioning jig having a plurality of positioning holes formed at specified positions into each of which holes the tubular contact element can be inserted, and a tubular contact element press-down jig.
  • a mounting jig having an insulated circuit board positioning jig, a tubular contact element positioning jig having a plurality of positioning holes formed at specified positions into each of which holes the tubular contact element can be inserted, and a tubular contact element press-down jig.
  • a mounting jig as follows is provided.
  • the mounting jig is a jig provided with an insulated circuit board positioning jig holding the insulated circuit board at a specified position for positioning, a tubular contact element positioning jig having a plurality of positioning holes at specified positions into each of which holes a tubular contact element can be inserted, and a tubular contact element press-down jig for pressing down a plurality of the tubular contact elements inserted into their respective positioning holes in the tubular contact element positioning jig.
  • an insulated circuit board and a plurality of tubular contact elements are positioned by an insulated circuit board positioning jig and a tubular contact element positioning jig, respectively, of a mounting jig and the tubular contact elements are then soldered onto the insulated circuit board while being pressed down by a tubular contact element press-down jig, by which the tubular contact elements can be mounted on the insulated circuit board with high positioning accuracy.
  • FIGURE 1 is a front view partly in section showing a semiconductor module 1 as an embodiment of a semiconductor device manufactured by a manufacturing method according to the invention.
  • FIGURE 2 is an enlarged cross sectional view showing a principal part of the semiconductor module 1 shown in FIG. 1 .
  • the semiconductor module 1, as is shown in FIG. 1 and FIG. 2 has at least one semiconductor chip, four semiconductor chips 3A, 3B, 3C and 3D in the illustrated embodiment, as semiconductor elements mounted on an insulated circuit board 2.
  • the semiconductor chips 3A, 3B, 3C and 3D can be, for example, IGBT (Insulated Gate Bipolar Transistor) chips and FWD (Free Wheeling Diode) chips.
  • the insulated circuit board 2 is formed of an insulating substrate 2a, a conductor pattern layer 2b formed on one surface of the insulating substrate 2a and a metal layer 2c formed on the other surface of the insulating substrate 2a.
  • the insulating substrate 2a is a substrate of insulating ceramic material such as aluminum oxide, aluminum nitride or silicon nitride.
  • the conductor pattern layer 2b is a layer formed into a circuit pattern with a conductor foil such as a copper foil or an aluminum foil.
  • the metal layer 2c is a layer of foil such as copper foil or aluminum foil.
  • the semiconductor chips 3A, 3B, 3C and 3D are joined onto the conductor pattern layer 2b side of the insulated circuit board 2 with solder 4. By the solder 4 or by bonding wires 5 of metal such as aluminum, the semiconductor chips 3A, 3B, 3C and 3D are electrically connected to the conductor pattern layer 2b.
  • FIGURE 3 is a perspective view showing a tubular contact element 6.
  • the tubular contact elements 6 is made of conductive material, copper, for example, and is, as is shown in the perspective view of FIG. 3 , formed into a shape having a top flange 62 at one longitudinal end to be the top end of a hollow cylindrical tube 61 as a tube and a bottom flange 63 at the other longitudinal end to be the bottom end.
  • the top flange 62 has a plurality of thicker sections 62a formed along the periphery thereof and a thinner section 62b as a section other than the thicker sections 62a.
  • the bottom flange 63 has a plurality of thicker sections 63a and a thinner section 63b.
  • the bottom flange 63 having thicker sections 63a, facilitates discharge of flux in soldering to permit reliable soldering.
  • the top flange 62 and the bottom flange 63 are preferably formed in the same shapes. This, however, does not exclude them from being formed into shapes different from each other.
  • One longitudinal end of the tubular contact element 6 is joined to the conductor pattern layer 2b of the insulated circuit board 2 with the solder 4 so that the tubular contact element 6 extends from the surface of the conductor pattern layer 2b of the insulated circuit board 2 with the longitudinal direction thereof being oriented in the vertical direction.
  • FIGURE 4 is a schematic plan view showing the connection between the tubular contact element 6 and the external terminal 7. As is shown in the schematic plan view of FIG. 4 , by inserting the external terminal 7 into the tubular contact element 6 to be fixed thereto while making the tubular contact element 6 cause plastic deformation, in other word, by making the external terminal 7 press-fitted to the tubular contact element 6, the external terminal 7 can be connected to the tubular contact element 6 with a high degree of reliability.
  • the insulated circuit board 2, on which the semiconductor chips 3A, 3B, 3C and 3D have been mounted, to which board the tubular contact elements 6 have been joined and in which board the bonding wires 5 have been wired, is contained in a case 8 ( FIG. 1 ) and the bottom end of the case 8 is bonded to the periphery of the insulated circuit board 2.
  • a space in a part inside the case 8 and lower than the upper lid thereof is filled with gel 9 by which the inside of the case 8 is sealed.
  • One end of the external terminal 7 protrudes from the case 8.
  • the tubular contact element 6 shown in FIG. 1 and FIG. 2 has a shape having the top flange 62 at one longitudinal end to be the top end of the hollow cylindrical tube 61 and the bottom flange 63 at the other longitudinal end to be the bottom end.
  • the invention is not limited to the shape.
  • FIG. 5 a front view showing examples of the tubular contact element 6, in addition to the tubular contact element 6 ((a) of FIG. 5 ) having the top flange 62 at one longitudinal end to be the top end and the bottom flange 63 at the other longitudinal end to be the bottom end, the structure of a tubular contact element 6A ((b) of FIG. 5 ) having the bottom flange 63 at one longitudinal end to be the bottom end and that of a tubular contact element 6B ((c) of FIG. 5 ) having no flange at either longitudinal end are also possible.
  • FIG. 6 is an elevational view illustrating the mounting jig 10 according to an embodiment of the invention with an elevational view partly in section shown in (a) and an exploded view partly in section shown in (b).
  • the mounting jig 10 has an insulated circuit board positioning jig 11 for positioning the insulated circuit board 2, a tubular contact element positioning jig 12 arranged over the insulated circuit board positioning jig 11 for positioning the tubular contact elements 6 and a tubular contact element press-down jig 13 arranged over the tubular contact element positioning jig 12 for pressing-down the tubular contact elements 6.
  • FIGURE 7 is a plan view showing the insulated circuit board positioning jig 11.
  • the insulated circuit board positioning jig 11 as is shown in FIG. 7 , has a recess 111 having a plane figure the same as that of the insulated circuit board 2. In the recess 111, the insulated circuit board 2 is held without substantially leaving any gap. Moreover, in the vicinity of each of the upper left corner and the lower right corner on the upper surface of the insulated circuit board positioning jig 11, a guide pin 112 of metal, of stainless steel, for example, is provided projecting therefrom.
  • the partial cross section of the insulated circuit board positioning jig 11 shown in FIG. 6 is the cross section along the line A-A viewed from the direction indicated by arrows in FIG. 7 .
  • FIGURE 8 is a plan view showing the tubular contact element positioning jig 12.
  • the tubular contact element positioning jig 12 has positioning holes 121 formed which penetrate the jig 12 in the thickness direction thereof each with a diameter permitting the tubular contact element 6 to be inserted.
  • the positions of the positioning holes 121 are specified ones at which the tubular contact elements 6 are to be mounted on the insulated circuit board 2.
  • the size of each of the positioning holes 121 is determined to be a little (for example, on the order of 0.15mm) larger than the outer diameter of the tubular contact element 6, namely the outer diameter of the top flange 62 or the bottom flange 63 when the tubular contact element 6 has the top flange 62 and the bottom flange 63 or has only the bottom flange 63.
  • the tubular contact element positioning jig 12 has a guide hole 122 formed in the vicinity of each of the upper left corner and the lower right corner. With the guide pin 112 inserted into each of the guide holes 122, the insulated circuit board 2 held in the insulated circuit board positioning jig 11 and the tubular contact elements 6 inserted into the positioning holes 121 in the tubular contact element positioning jig 12 are positioned. In the embodiment, the thickness of the tubular contact element positioning jig 12 is larger than the longitudinal length of the tubular contact element 6.
  • the partial cross section of the tubular contact element positioning jig 12 shown in FIG. 6 is the cross section along the line B-B viewed from the direction indicated by arrows in FIG. 8 .
  • FIGURE 9 is a view showing the tubular contact element press-down jig 13 viewed from the back thereof.
  • the tubular contact element press-down jig 13 has a plurality of projections 131 formed on the back thereof facing the tubular contact element positioning jig 12.
  • the positions of the projections 131 are specified ones at which the projections 131 can press down the tubular contact elements 6 inserted into the tubular contact element positioning jig 12.
  • the size of the projection 131 is determined to be the size with which the projection 131 can be inserted into the positioning hole 121 of the tubular contact element positioning jig 12 and can press down the tubular contact element 6 and, particularly when the tubular contact element 6 has the top flange 62, the thicker section 62a of the top flange 62. Therefore, the size of the projection 131 is preferably determined to be approximately equal to the outer diameter of the top flange 62.
  • the shape of the projection 131 can be prism-like or circular cylinder-like.
  • the projections 131 can be formed by cutting the back of the tubular contact element press-down jig 13 or also can be formed by press-fitting the projection 131 of metal into each of holes formed beforehand in the back of the tubular contact element press-down jig 13.
  • the projection 131 is made of metal, metallic material that can not be joined by soldering such as stainless steel or aluminum is preferably used.
  • the length of the projection 131 is determined to be the length with which the projection 131 can press down the tubular contact element 6 in the tubular contact element positioning jig 12 when the tubular contact element press-down jig 13 is laid on the tubular contact element positioning jig 12.
  • the tubular contact element press-down jig 13 has guide hole 132 formed in the vicinity of each of four corners. By inserting the guide pin 112 into each of the guide holes 132, the tubular contact elements 6 inserted in the positioning holes 121 of the tubular contact element positioning jig 12 are made positioned so that the projections 131 of the tubular contact element press-down jig 13 can press down the tubular contact elements 6.
  • the tubular contact element press-down jig 13 presses down the tubular contact elements 6 by its own weight.
  • FIGURE 15 is a flow chart showing a part of a joining process in the method of manufacturing a semiconductor device according to an embodiment of the invention.
  • the insulated circuit board positioning jig 11, the tubular contact element positioning jig 12 and the tubular contact element press-down jig 13 are prepared (step S1 in FIG. 15 ).
  • solder is applied at each of positions at which the tubular contact elements 6 are to be mounted and at each of positions at which the semiconductor chips 3A, 3B, 3C and 3D are to be mounted.
  • solder paste is preferably used for being applied by printing.
  • the semiconductor chips 3A, 3B, 3C and 3D are placed on the conductor pattern layer 2b on the insulated circuit board 2 by using a device such as a mounter (automatic mounting device).
  • the insulated circuit board 2 is made to be held in the recess 111 of the insulated circuit board positioning jig 11 (step S2 in FIG. 15 (see (b) of FIG. 6 )).
  • the tubular contact element positioning jig 12 is laid on the insulated circuit board positioning jig 11 by making the guide pins 112 thereof inserted through the guide holes 122 of the tubular contact element positioning jig 12. This determines the positions of the tubular contact elements 6 on the insulated circuit board 2.
  • a device such as a mounter (automatic mounting device)
  • the tubular contact elements 6 are inserted into the positioning holes 121 in the tubular contact element positioning jig 12 (step S3 in FIG. 15 ).
  • the tubular contact element press-down jig 13 is laid on the tubular contact element positioning jig 12 by making the guide pins 112 of the insulated circuit board positioning jig 11 inserted through the guide holes 132 of the tubular contact element press-down jig 13. This accomplishes the positioning of the tubular contact elements 6 in the positioning hole 121 of the tubular contact element positioning jig 12 and the projections 131 of the tubular contact element press-down jig 13, by which the tubular contact elements 6 are pressed down toward the insulated circuit board 2 (see (a) of FIG. 6 ).
  • the mounting jig 10 the insulated circuit board 2 and the tubular contact elements 6 are made contained in a depressurized furnace to be heated for melting solder, by which the tubular contact elements 6 are soldered onto the conductor pattern layer 2b on the insulated circuit board 2 (step S4 in FIG. 15 ).
  • the semiconductor chips 3A, 3B, 3C and 3D are soldered onto the conductor pattern layer 2b on the insulated circuit board 2.
  • the positioning carried out while pressing down the tubular contact elements 6 with the use of the mounting jig 10 enables the tubular contact elements 6 to be mounted on the insulated circuit board 2 with ensured verticality and high positional accuracy. Moreover, the positioning carried out while pressing down the tubular contact elements 6 with the use of the mounting jig 10 makes the tubular contact elements 6 vertically pressed against the insulated circuit board 2 at soldering, which allows solder to surely go into the hollow cylindrical tube 61 of each of the tubular contact elements 6 to thereby the amount of solder in the hollow cylindrical tube 61 can be reliably secured.
  • FIG. 10 For explaining the preferable form of the mounting jig 10, an enlarged fragmentary cross sectional view of the X portion in (a) of FIG. 6 , namely a portion in the vicinity of the positioning hole 121 of the tubular contact element positioning jig 12, is shown in FIG. 10 .
  • the positioning hole 121 is formed of a tapered section 121a and a straight section 121b.
  • the inner diameter of an opening on the side onto which the tubular contact element 6 is inserted is larger than the inner diameter of an opening on the opposite side and becomes smaller in the thickness direction.
  • the straight section 121b the inner diameter of an opening is constant.
  • the positioning hole 121 being formed so as to have the tapered section 121 a on the side onto which the tubular contact element 6 is inserted, permits the tubular contact element 6 to be easily inserted into the positioning hole 121, by which workability can be improved.
  • the structure means that when the tubular contact element 6 is inserted into the positioning hole 121, the bottom end of the tapered section 121a of the positioning hole 121 positions higher than the top end of the tubular contact element 6, or means that the tubular contact element 6 is contained only in the straight section 121b without being contained in the tapered section 121a.
  • the structure enables the tubular contact element press-down jig 13 to be easily removed from the tubular contact element positioning jig 12 after the tubular contact element 6 is soldered onto the conductor pattern layer 2b of the insulated circuit board 2.
  • the foregoing structure is a particularly preferable form when using the tubular contact element 6 having the top flange 62 of the examples of the tubular contact elements 6 shown in FIG. 5 .
  • FIG. 11 is an elevational view illustrating the mounting jig 20 with an elevational view partly in section shown in (a) and an exploded view partly in section shown in (b).
  • the mounting jig 20 shown in (a) and (b) of FIG. 11 has an insulated circuit board positioning jig 21 for positioning the insulated circuit board 2, a tubular contact element positioning jig 22 arranged over the insulated circuit board positioning jig 21 for positioning the tubular contact elements 6 and a tubular contact element press-down jig 23 arranged over the tubular contact element positioning jig 22 for pressing-down the tubular contact elements 6.
  • the insulated circuit board positioning jig 21 has a recess 211 and guide pins 212 having the same structures as those of the recess 111 and guide pins 112, respectively, explained in the foregoing when compared, although they have different reference numerals. Therefore, redundant explanations with respect to the recess 211 and guide pins 212 will be omitted.
  • the partial cross section of the insulated circuit board positioning jig 21 shown in FIG. 11 is the cross section along the line A-A viewed from the direction indicated by arrows in FIG. 7 .
  • the tubular contact element positioning jig 22 has positioning holes 221 and guide holes 222 having the same structures as those of the positioning holes 121 and guide holes 122, respectively, explained in the foregoing when compared, although they have different reference numerals. Therefore, redundant explanations with respect to the positioning holes 221 and guide holes 222 will be omitted.
  • the tubular contact element positioning jig 22 in the embodiment differs from the tubular contact element positioning jig 12 of the mounting jig 10 explained in the foregoing in that the thickness of the tubular contact element positioning jig 22 is smaller than the longitudinal length of the tubular contact element 6.
  • the partial cross section of the tubular contact element positioning jig 22 shown in FIG. 11 is the cross section along the line B-B viewed from the direction indicated by arrows in FIG. 8 .
  • the tubular contact element press-down jig 23 has guide holes 232 having the same structures as those of the guide holes 132 in the mounting jig 10 explained in the foregoing when compared, although they have different reference numerals. Therefore, redundant explanations with respect to the guide holes 232 will be omitted.
  • the tubular contact element press-down jig 23 has a flat bottom surface, that is, no projection is formed on the bottom surface. Therefore, the bottom surface of the tubular contact element press-down jig 23 has a shape without projections 131 shown in FIG. 9 .
  • tubular contact element press-down jig 13 in the mounting jig 10 projections can be formed on the bottom surface of the tubular contact element press-down jig 23.
  • the tubular contact element press-down jig 23 presses down the tubular contact elements 6 projecting upward higher than the top surface of the tubular contact element positioning jig 22 with the flat bottom surface of the tubular contact element press-down jig 23 by its own weight.
  • An example of a method of soldering the tubular contact elements 6 to the insulated circuit board 2 with the use of the mounting jig 20 can be made to be the same as the one example of the method of soldering the tubular contact elements 6 to the insulated circuit board 2 with the use of the mounting jig 10. Therefore, redundant explanations thereof will be omitted.
  • the positioning carried out while pressing down the tubular contact elements 6 with the use of the mounting jig 20 enables the tubular contact elements 6 to be mounted on the insulated circuit board 2 with ensured verticality and high positional accuracy. Moreover, the positioning carried out while pressing down the tubular contact elements 6 with the use of the mounting jig 20 makes the tubular contact elements 6 vertically pressed against the insulated circuit board 2 at soldering, which allows solder to surely go into the hollow cylindrical tube 61 of each of the tubular contact elements 6 to thereby the amount of solder in the hollow cylindrical tube 61 can be reliably secured.
  • FIG. 12 An enlarged fragmentary cross sectional view of the XII portion in (a) of FIG. 11 , namely a portion in the vicinity of the positioning hole 221 of the tubular contact element positioning jig 22, is shown in FIG. 12 .
  • the positioning hole 221 is formed of a tapered section 221a and a straight section 221b.
  • the inner diameter of an opening on the side onto which the tubular contact element 6 is inserted is larger than the inner diameter of an opening on the opposite side and becomes smaller in the thickness direction.
  • the straight section 221b the inner diameter of an opening is constant.
  • the positioning hole 221 being formed so as to have the tapered section 121a on the side onto which the tubular contact element 6 is inserted, permits the tubular contact element 6 to be easily inserted into the positioning hole 221, by which workability can be improved.
  • a structure is provided in which letting the thickness of the tubular contact element positioning jig 22 be t and the longitudinal length of the tubular contact element 6 be h, the longitudinal length h of the tubular contact element 6 is longer than the thickness t of the tubular contact element positioning jig 22.
  • the difference between h and t is 0.3mm or more.
  • the structure is provided so that the tubular contact element press-down jig 23 can press down the tubular contact element 6.
  • the foregoing structure can be applied to the case of using the tubular contact element 6 having the top flange 62 and to the cases of using the tubular contact elements 6A and 6B both having no top flanges 62.
  • FIG. 13 An enlarged fragmentary cross sectional view of the XIII portion in FIG. 10 , namely a portion in the vicinity of the projection 131 formed in the tubular contact element press-down jig 13 of the mounting jig 10, is shown in FIG. 13 .
  • a small projection 131a is formed at the head of the projection 131.
  • the tip of the small projection 131a has a tapered down shape, by which the small projection 131a is made to be easily inserted in the hollow cylindrical tube 61 of the tubular contact element 6.
  • the base of the small projection 131a has an outer diameter smaller than the inner diameter of the hollow cylindrical tube 61 of the tubular contact element 6, by which the small projection 131a goes into the hollow cylindrical tube 61 of the tubular contact element 6 when the projection 131 presses down the tubular contact element 6. From this, it becomes possible to carry out positioning while pressing down the tubular contact element 6 with the use of the tubular contact element press-down jig 13 having the small projection 131a to thereby make it possible to further improve the positioning accuracy of the tubular contact element 6.
  • the small projection 131a has a function of the upper lid of the hollow cylindrical tube 61 of the tubular contact element 6. This can prevent molten solder from running out together with flux from the longitudinal top end of the tubular contact element 6 through the hollow cylindrical tube 61 at soldering of the tubular contact element 6 in a depressurized furnace.
  • FIG. 13 an example is shown in which the small projection 131a is formed in the tubular contact element press-down jig 13 of the mounting jig 10.
  • a small projection going into the hollow cylindrical tube 61 of the tubular contact element 6 can be formed in the tubular contact element press-down jig 23.
  • only a small projection can be also formed on the flat bottom surface of the tubular contact element press-down jig 23.
  • a projection like the projection 131 formed in the tubular contact element press-down jig 13 is provided on the bottom surface of the tubular contact element press-down jig 23 and a small projection is provided at the head of the projection for being formed into a shape like the shape of the small projection 131a shown in FIG. 13 .
  • the mounting jig 20 it becomes possible for the mounting jig 20 to carry out positioning while pressing down the tubular contact elements 6 to thereby make it possible to further improve the positioning accuracy of the tubular contact element 6.
  • FIGURE 14 is a schematic enlarged fragmentary cross sectional view of the XIII portion in FIG. 10 as a portion in the vicinity of the projection 131, the view showing an example of a modification of the tubular contact element press-down jig 13 in which the small projections 131a are formed.
  • the small projection 131a is formed at the head of the projection 131 shown in FIG. 14 and an outer peripheral section 131b and an inside peripheral section 131c at the head of the projection 131 are formed in step-like with a difference in level equal to the difference in thickness between the thicker section 62a and the thinner section 62b in the top flange 62 of the tubular contact element 6.
  • the insulated circuit board positioning jig 11, the tubular contact element positioning jig 12 and the tubular contact element press-down jig 13 forming the mounting jig 10 are preferably made of composite ceramic material having a coefficient of linear expansion equal to or less than the coefficient of linear expansion of carbon or carbon.
  • the insulated circuit board positioning jig 21, the tubular contact element positioning jig 22 and the tubular contact element press-down jig 23 forming the mounting jig 20 are preferably made of composite ceramic material having a coefficient of linear expansion equal to or less than the coefficient of linear expansion of carbon or carbon.
  • the jig forming the mounting jig 10 or the mounting jig 20 is formed with material having a coefficient of linear expansion larger than the coefficient of linear expansion of carbon, for example, metallic material such as aluminum, aluminum alloy or stainless steel, there is fear that a dimensional difference is caused between the jig and the insulated circuit board 2 due to a large difference between the coefficient of linear expansion of the jig and the coefficient of linear expansion of the insulated circuit board 2 to result in insufficient positioning accuracy of the tubular contact element 6 and therefore insufficient positioning accuracy of the external terminal 7.
  • the jig forming the mounting jig 10 or the mounting jig 20 as a jig made of composite ceramic material having a coefficient of linear expansion equal to or less than the coefficient of linear expansion of carbon or carbon, the difference between the coefficient of linear expansion of the jig and the coefficient of linear expansion of the insulated circuit board 2 is made small to make it possible to ensure the positioning accuracy of the tubular contact element 6 to finally secure the positioning accuracy of the external terminal 7.
  • the material forming the mounting jig 10 or the mounting jig 20 is chosen to be composite ceramic material having a coefficient of linear expansion equal to or less than the coefficient of linear expansion of carbon or carbon, it is preferable from the view point of easiness in processing the jig that the material can be subjected to cutting.
  • the composite ceramic material that has a coefficient of linear expansion equal to or less than the coefficient of linear expansion of carbon and can be subjected to cutting there are silicon nitride series composite ceramics, alumina series composite ceramics and boron nitride series composite ceramics.
  • ceramics such as Si 3 N 4 -BN composite ceramic, Al 2 O 3 -BN composite ceramic and hBN ceramic.
  • the tubular contact elements 6 are positioned onto the insulated circuit board 2 by using the mounting jig 10 or the mounting jig 20 to be soldered to the insulated circuit board 2, specified wire bonding work is carried out with respect to the insulated circuit board 2. Then, the external terminal 7 is inserted into each of the tubular contact elements 6 to be press-fitted thereto for electrical connection. After this, to the insulated circuit board 2, the case 8 is bonded, which is then filled with the gel 9.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Electric Connection Of Electric Components To Printed Circuits (AREA)
  • Lead Frames For Integrated Circuits (AREA)
  • Ceramic Engineering (AREA)
  • Structures For Mounting Electric Components On Printed Circuit Boards (AREA)
EP14159319.4A 2013-03-22 2014-03-13 Procédé de fabrication de dispositif semi-conducteur et gabarit de montage Active EP2782431B1 (fr)

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JP6217101B2 (ja) * 2013-03-22 2017-10-25 富士電機株式会社 半導体装置の製造方法及び取り付け治具
US10405434B2 (en) 2013-03-22 2019-09-03 Fuji Electric Co., Ltd. Mounting jig for semiconductor device
JP6481527B2 (ja) * 2015-06-25 2019-03-13 富士電機株式会社 半導体装置
JP6866716B2 (ja) * 2017-03-23 2021-04-28 富士電機株式会社 半導体装置
JP7013717B2 (ja) 2017-08-17 2022-02-01 富士電機株式会社 半導体装置の製造方法及びはんだ付け補助治具
EP3518278A1 (fr) 2018-01-30 2019-07-31 Infineon Technologies AG Module semi-conducteur de puissance et procédé de sa fabrication
JP7215206B2 (ja) 2019-02-19 2023-01-31 富士電機株式会社 半導体装置の製造方法
JP7451905B2 (ja) 2019-09-03 2024-03-19 富士電機株式会社 半導体装置及び半導体装置の製造方法
JP7347047B2 (ja) 2019-09-12 2023-09-20 富士電機株式会社 半導体装置
JP2021150468A (ja) * 2020-03-19 2021-09-27 富士電機株式会社 半導体装置の製造方法、半導体装置及び押圧装置
WO2022075135A1 (fr) * 2020-10-05 2022-04-14 株式会社クリエイティブコーティングス Ensemble gabarit de positionnement, gabarit de positionnement, procédé de positionnement pour corps de composant électronique et procédé de montage de celui-ci sur un gabarit de transport
CN112951773A (zh) * 2021-01-28 2021-06-11 安阳师范学院 一种大功率半导体装置的焊接及密封结构
WO2024014165A1 (fr) * 2022-07-13 2024-01-18 富士電機株式会社 Dispositif à semi-conducteur

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Publication number Publication date
JP6217101B2 (ja) 2017-10-25
EP2782431A3 (fr) 2016-01-27
JP2014187179A (ja) 2014-10-02
CN104064493A (zh) 2014-09-24
US9204559B2 (en) 2015-12-01
US20140317896A1 (en) 2014-10-30
US20160050764A1 (en) 2016-02-18
US9877397B2 (en) 2018-01-23
EP2782431B1 (fr) 2020-08-05
CN104064493B (zh) 2018-05-04

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